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Call HYPRE_DeviceInitialize after HYPRE_Init if using GPUs #5336

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Call HYPRE_DeviceInitialize after HYPRE_Init if using GPUs #5336

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1 change: 1 addition & 0 deletions Src/Base/AMReX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -754,6 +754,7 @@ amrex::Initialize (int& argc, char**& argv, bool build_parm_parse,
hypre_HandleDefaultExecPolicy(hypre_handle()) = HYPRE_EXEC_DEVICE;
hypre_HandleSpgemmUseCusparse(hypre_handle()) = 0;
#endif
HYPRE_DeviceInitialize();
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@WeiqunZhang WeiqunZhang Apr 15, 2026

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Could we move this line right after HYPRE_init, in case it needs to be called before functions like HYPRE_SetGPUMemoryPoolSize?

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@jrood-nrel jrood-nrel Apr 15, 2026

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Copilot (Opus) claimed it should be at this location. I'm going to convert this to a draft anyway, because it seems like there is more to this I think I need to understand.

#endif

if (system::verbose > 0) {
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